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OSPF features not supported in this release
The following OSPF features are not supported in this release:
• Summarizing external routes
• Filtering OSPF routes
• Using OSPF to forward multicast routes
• Configuring OSPF on non-broadcast multi-access networks (such as frame relay, X.25, and ATM)
OSPF configuration examples
A summary of the basic steps for configuring OSPF on the switch is listed here. Detailed instructions for
each of the steps are covered in the following sections:
• Configure IP interfaces.
One IP interface is required for each desired network (range of IP addresses) being assigned to an
OSPF area on the switch.
• (Optional) Configure the router ID.
The router ID is required only when configuring virtual links on the switch.
• Enable OSPF on the switch.
• Define the OSPF areas.
• Configure OSPF interface parameters.
IP interfaces are used for attaching networks to the various areas.
• (Optional) Configure route summarization between OSPF areas.
• (Optional) Configure virtual links.
• (Optional) Configure host routes.
Example 1: Simple OSPF domain (CLI example)
In this example, two OSPF areas are defined—one area is the backbone and the other is a stub area. A
stub area does not allow advertisements of external routes, thus reducing the size of the database.
Instead, a default summary route of IP address 0.0.0.0 is automatically inserted into the stub area. Any
traffic for IP address destinations outside the stub area will be forwarded to the stub area’s IP interface,
and then into the backbone.
Figure 21 Simple OSPF domain